Functional materials with controllable viscosity

US8987380B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Stefan Hilf · Rodenbach, DE
• Friedrich Georg Schmidt · Haltern am See, DE
• Andre Hennig · Ingelheim am Rhein, DE
• Simon Krause · Aschaffenburg, DE
• Christopher Barner-Kowollik · Blankenloch, DE
• Andrew John Inglis · Sydney, AU
• Leena Nebhani · Copley, US

Key dates

• Filing date: Jan 4, 2011
• Grant date: Mar 24, 2015
• Expiry date: Sep 21, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/38
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an innovative method for controlling the viscosity of, for example, adhesives or coating formulations. The method for controlling viscosity allows very rapid thermoplastic curing of a formulation even at room temperature and a significant reduction in the viscosity at higher temperatures, thereby regaining the capacity for simple processing and allowing, for example, the originally bonded substrates to be separated from one another again with ease. A particular aspect in this context is that a plurality of cycles of thermoplastic curing and a significant reduction in the viscosity are possible with the present system.